I'm a software engineer focused on modern TypeScript applications.
My main strength is building well-structured, interactive user interfaces, but I also work across the stack — including backend services, integrations and DevOps workflows.

I’ve worked on commercial projects across domains like time tracking, NFT marketplaces, AI-generated ad creatives, fintech systems, and nonprofit platforms.

Currently focusing on React + TypeScript ecosystems, building applications with strong architecture, rich UI interactions and scalable backend integrations.

• 🧩 Dynamic form systems with complex validation and nested logic
• 🏢 Admin panels and dashboards for organizations, fintech and SaaS platforms
• 🔐 Authentication systems including Web3 wallet login
• 🎨 Template engines for AI-generated marketing creatives
• 🔌 API integrations, automation workflows and backend services in TypeScript / Node.js
• ⚙️ CI/CD pipelines, containerized deployments and infrastructure workflows

More projects:
👉 https://github.com/bartkozik?tab=repositories

Built one of three stack prototypes (React + Mantine + Vite) including dashboards, forms and charts. The prototype helped guide the final technology stack decision.

Developed complex multi-step onboarding flows and organization dashboards (React + MobX + Zod). Heavy focus on logic-driven forms and validation.

Worked on a system generating thousands of dynamic ad creatives using template definitions rendered in a visual canvas.
Stack: React, TypeScript, opentype.js, pixelmatch.

Implemented KYC flows, secure document handling and transaction dashboards for internal banking users.

Sole frontend developer for ~6 months. Designed and implemented the full UI architecture including forms, animations, i18n and testing.

Implemented wallet-based authentication (wagmi + RainbowKit) and a user portfolio dashboard. Worked with minimal design specs and brutalist UI.

Developed a fully responsive animated landing page from scratch (Next.js + SCSS + Framer Motion).
Proposed and implemented the entire responsive layout, as mobile views were not provided in the design.

React + TypeScript + Zod + React Hook Form + Vite

Fast, scalable and type-safe — great both for rapid prototyping and production systems.

• 🤝 Strong communication with developers, designers and clients
• 🧩 Analytical problem solving — I like digging into complex systems
• 🎯 Ownership & accountability for delivered features
• ⏱️ Solid time management and reliability
• 🔍 Curiosity — I enjoy exploring documentation, edge cases and new tools

When I’m not coding, I’m probably:

• 🎧 Listening to Hip-Hop
• 📚 Reading sci-fi or fantasy
• 🛹 Skateboarding
• 👨‍🍳 Cooking something spicy

🪐 LinkedIn
https://www.linkedin.com/in/bartosz-kozikowski

📫 Contact
kozikowskib@gmail.com